Hi i have a landcruiser 80 i have been using it to tow which it does great , theres a few issues with it and a noise from the drive train or play in the ujs on the prop I believe also the rear locker is not locking which I intend to sort out but my problem which iam trying to get to grips with at the moment is when i have it on full lock theres a knocking noise when moving I was wondering if anyone has had this problem or knows what it is and could it be related to the other issues . Many thanks